Demilio: Roberto Clemente Day Serves as Another Reminder to Retire
Carlos Delgado says MLB should retire Roberto Clemente's No. 21
For Many Latino Players, Roberto Clemente's Number Is Off Limits, Too - The New York Times
MLB honors Roberto Clemente during Hispanic Heritage Month
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MLB honors Roberto Clemente in 21st annual event
Pirates Preview: Chance to Salvage Series on Sunday
MLB honors Roberto Clemente in 21st annual event
Derek Shelton Archives Pittsburgh Baseball Now
Marlins news: Roberto Clemente Day moments; another Groshans milestone - Fish Stripes
The Pittsburgh Pirates retire Roberto Clemente's uniform number 21 in a moving pre-game ceremony - This Day In Baseball
Carlos Delgado says MLB should retire Roberto Clemente's No. 21
Carlos Delgado says MLB should retire Roberto Clemente's No. 21
Governor signs law creating Roberto Clemente Day